Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79ad42957f31b8d…

MALICIOUS

PDF

49.4 KB Created: 2020-08-22 23:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9117cc7c4db9b58bceebb43e0f5b9a10 SHA-1: f2816decd63876d24a31bb69eeddfcacfb1f7be7 SHA-256: d79ad42957f31b8d530e66a83b3896bcfa4c718f89e7b0fdb9325ff1e96bc53f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'ark kibble taming guide' and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous external links, as flagged by PDF_SEO_LINK_FARM. The primary attack vector appears to be social engineering through a deceptive link.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=ark+kibble+taming+guide
    • http://files.happyvalleyartsacademy.com/uploads/1/3/0/7/130739140/5453389.pdf
    • http://files.littletreeyogis.com/uploads/1/3/0/7/130739919/xusejanuzapim.pdf
    • http://lawufu.shadowcreekchoir.com/uploads/1/3/1/3/131381762/056378c.pdf
    • http://files.thewillowtreegifts.com/uploads/1/3/1/1/131163635/buxene.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/sixoredegulifojaxomisuwu.pdf
    • https://cdn.shopify.com/s/files/1/0465/3170/7030/files/charity_commission_trustee_eligibility_declaration_form.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/100_cotton_sheeting_fabric_uk.pdf
    • https://cdn.shopify.com/s/files/1/0435/2452/2143/files/madigox.pdf
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/academic_writing_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/8860/8418/files/super_mario_advance_rom.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/magugememubo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/76719672144.pdf
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/farlex_complete_english_punctuation_rules.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/26768142074.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/lagededuxoga.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/edible_straws.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/80495052330.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061e8.bin
2f5ed3156eef39fcf776bb6608895d55b05c3c7c598aad1c2addb6d9937af2da
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E8 4932 bytes
font_01_sfnt_off00007289.bin
fe01a336d469d300add13308431677b2b4ffb5a0b0c2638d46d1197c980c9280
pdf-font-stream PDF embedded font (sfnt) at offset 0x7289 10184 bytes
font_02_sfnt_off00009590.bin
b5880f88fc9e5617af74cb89d4ef8ca33dba23f9e4d074d2a1f4b6a81569548c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9590 16124 bytes
font_03_sfnt_off0000aa60.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA60 4324 bytes